Electrum Coin - Eye Variant

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"Electrum was a naturally occurring silver-gold alloy with half the value of pure gold: 1 electrum piece (ep) was worth 50 copper pieces (cp), 5 silver pieces (sp), 1/2 of a gold piece (gp), or 1/20 of a platinum piece (pp). A standard electrum coin was approximately 30.6 mm in diameter and weighed approximately 9 grams apiece (or 50 to one pound). As a bulk trade good, it was worth 25 gp per pound." - dungeonsfandom.com